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. 2007 Apr 6;189(11):4305–4309. doi: 10.1128/JB.00042-07

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Copyright © 2007, American Society for Microbiology

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FIG. 4. — Electron microscopy analysis of the S. solfataricus flagellum. (A) Example of a long flagellar filament showing a typical wave-like pattern. (B) A typical segment of a flagellum, used for image processing; the helical motif of the filament is readily recognizable. (C) The projection average of 33 aligned metal-shadowed segments indicates that the filament is right-handed. (D) Two-dimensional projection average of 120 aligned segments. (E) Scheme for the helical packing projected on the averaged image of frame (D). The three-start left-handed helical packing is indicated in color. Bars, 1 μm (A) and 10 nm (D and E).